Hi
On 28.03.2017 05:35, Olivier Langlois wrote:
Hardware:
HP Spectre 13
http://h10032.www1.hp.com/ctg/Manual/c05228576.pdf
Kernel version:
4.10.6 SMP PREEMPT x86_64
Is this a new issue? was it working on some other kernel?
When I plug my usb storage on the USB 3.1 Gen1 port, the storage is
working:
[ 498.070841] usb 2-3: new SuperSpeed USB device number 2 using
xhci_hcd
[ 498.114368] usb-storage 2-3:1.0: USB Mass Storage device detected
...
but when I plug it on one of the 2 Thunderbolt port, I get:
<lots of PCI messages related to hoplugging xhci>
[ 352.851123] xhci_hcd 0000:37:00.0: xHCI Host Controller
[ 352.851129] xhci_hcd 0000:37:00.0: new USB bus registered, assigned
bus number 3
[ 352.852299] xhci_hcd 0000:37:00.0: hcc params 0x200077c1 hci version
0x110 quirks 0x00009810
[ 352.852566] hub 3-0:1.0: USB hub found
[ 352.852575] hub 3-0:1.0: 2 ports detected
[ 352.852749] xhci_hcd 0000:37:00.0: xHCI Host Controller
[ 352.852753] xhci_hcd 0000:37:00.0: new USB bus registered, assigned
bus number 4
[ 352.852915] hub 4-0:1.0: USB hub found
[ 352.852923] hub 4-0:1.0: 2 ports detected
[ 353.211414] usb 3-2: new high-speed USB device number 2 using
xhci_hcd
[ 353.351482] usb 3-2: device descriptor read/64, error -71
[ 353.611477] usb 3-2: device descriptor read/64, error -71
[ 353.871617] usb 3-2: new high-speed USB device number 3 using
xhci_hcd
Odd that it tries to enumerate as high-speed.
Might be because xHC controller is being hotplug added at device connect,
and xhci driver adds USB2 hcd first, and usb3 hcd second.
What happens if you first connect a high-speed USB device to the first
Thunderbolt type-C Gen2 port, and then after a while when xhci driver is
properly loaded plug in the SuperSpeed device to the second TB type-C gen2 port?
Thomas Reifferscheid reported a similar issue recently. His device got
detected as both high and superspeed at the same time if it was connected
during boot
http://marc.info/?l=linux-usb&m=148897296702314&w=2
He listed 3 workarounds, but I haven't yet had time to get into this
issue in detail.
-Mathias
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